Vessels Kapitan Dranitsyn and Admiral Makarov 'marooned' in east for the rest of winter after getting trapped off Chukotka.
New road and rail link over the Nadym River.
The Arctic was at the centre of world's attention in recent years, with the Nordic countries now on a steady, but a serious race for dominance in the region.
Besides, it is impossible to halt global warming which has been underway for many decades, insists the president.
Shoreline on remote island retreats by 74 metres in seven years due to increased wave power of unfrozen sea, and thawing permafrost.
A renaissance of one of Siberia's first outposts as the Far North becomes the new economic frontier.
Reindeer herders find more craters in the far north in a deepening puzzle for scientists.